3.1L v6 Deuce Coupe

Post your project vehicles here! One thread per vehicle please.
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

3.1L v6 Deuce Coupe

Post by DeuceEFI »

Hello,

My name is Andy and I have been working on building from scratch a replica of a 1932 Ford 5 window coupe. I have chosen to install something different from the traditional 350/350 powertrain combo, I went instead with a GM 3.1L SFI v6 from an Oldsmobile FWD car, which I have rotated back to the longitudinal format, changed the front timing cover to one from a 1995 Camaro and connected this all to a 1989 Camaro 700r4 4 speed automatic. I started off like many others going with another popular (open and then) closed source EMS since I am running a setup which the original ECM just couldn't be reprogrammed to do.

I am running wasted spark ignition and would like to do either sequential or semi-sequential fuel injection as I have a built-in camshaft sensor courtesy of GM. I have made my own headers as this car will not be running hood sides, so I thought that having Lake style headers would look good, but I am also making a set of sprint car style headers (watch the movie American Grafitti and check out the yellow coupe).

I am currently designing stacking boards to use with the TA CPU card, with seperate boards for the voltage regulators, the inputs from the sensors and the outputs to the 6 injectors and the GM DIS module. I will update this thread as I go along.

Keep up the good work with the code and hardware will follow once the pinout has been finalized.

Thanks,

Andy
User avatar
jharvey
1N4001 - Signed up
Posts: 1607
Joined: Tue Jun 10, 2008 5:17 pm

Re: 3.1L v6 Deuce Coupe

Post by jharvey »

Cool, and I look forward to pictures.

Are you going to use KICAD? If so, many of the schematics are likely already done. So that could help fast track your dev cycle. If you post a list of features you look to do, I can likely point you to existing schematics that might be of interest. There's a pile of them out there, and they are fairly well scattered about.

Do you plan SMT, thru hole, ect?
User avatar
Fred
Moderator
Posts: 15413
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: 3.1L v6 Deuce Coupe

Post by Fred »

With the current state of things, you'll be running semi sequential and wasted spark on it, which sounds like it suits you for the time being. A crank signal alone is enough for that. Pin outs have been finalised, with a few small exceptions, as documented here:

http://issues.freeems.org/view.php?id=190

The fuel and ignition pin changes are easy enough to work around in a hardware design and won't be changing any time soon. Sean is working on the XGATE BB code to utilise random pins for injection and possibly ignition too, but that code won't make it into a release until 0.3.0 or 0.4.0 when it is very well tested as it is absolutely critical that it works flawlessly.

So in summary, there isn't anything stopping anyone from going ahead and doing a slightly compromised design right now. Have a look at page 8 of this for how to hook it up flexibly: https://github.com/dvisser/Ravage/blob/ ... f?raw=true

Later just by changing some resistors or jumpers or similar you could upgrade to 6+6 and sequential/COP for your 6 cylinder, without any reprint etc.

I hope that helps!

Now, what type of RPM/Position signal do you have on it, exactly? I need to know to make sure you're supported! :-)

Regards,

Fred.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

Re: 3.1L v6 Deuce Coupe

Post by DeuceEFI »

I will draw this up in KiCAD, just so we can work on it together...

The plan is thru hole as much as possible to keep it easy to work on for the DIYer, use the TA cpu board since I already have that, my engine has a crank position sensor (factory 1995 Chevy Camaro CPS), camshaft position sensor (factory 1996 Oldsmobile Ciera), I have 6 high-Z injectors (1 per cylinder, it was sequential injected from the factory, but only from idle to 1800 RPM, after that is was bank fire on the GM ECM). I have samples coming from Texas Instruments (stepper motor controller) and Maxim Semiconductor (RS232 level converter and Variable Reluctance input IC), I already have a pair of samples of our 112 pin Freescale cpu's to build my own cpu board for testing questionable circuits on some spare engines I have, and I have received samples from the 2 x 25pin board-to-board connectors that TA used so I can connect it all together... I'm going to run the GM DIS (wasted spark setup) so the only ignition output I need is one to change the timing to the DIS module.

I will find out more info on the crank and cam position sensors and post that info back so Fred can make sure the firmware can make sense of it. The DIS unit gets it's info from a 7x rough crank position sensor (6 evenly spaced notches and one 10* BTDC of cylinder #1) to determine when to fire cylinder #1 and for the basic RPM input. The GM DIS (similiar to the GM HEI) module provides the RPM input to my current EMS.

I need to read up on the threads for keeping the cpu powered at all times and the using a wake up signal, as I see the Ravage board is going to use this and I just need more info to incorporate it into my design.

I plan on keeping the I/O flexible as the Ravage project is that way it will be simple to change the HW once the FW is stablized. I also plan on staying with the stacking design unless there are concerns, my thinking is that inputs and outputs should be on separate boards that way I can keep the grounds isolated from the cpu ground. I haven't decided on connectors to the engine yet, I'm waiting until I get closer, I do know that I DON'T want a DB-37 like the EMS that I use currently has, I would prefer something more "Automotive" grade rather than "Computer" grade, if you know what I mean...
User avatar
Fred
Moderator
Posts: 15413
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: 3.1L v6 Deuce Coupe

Post by Fred »

While looking for timing patterns I noticed the lack of link to the aforementioned hardware design, so here it is: viewtopic.php?f=62&t=1529

Also, which stepper motor controller did you get? Curious to read the datasheet for it.

Fred.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

Re: 3.1L v6 Deuce Coupe

Post by DeuceEFI »

Here's a photo of the Deuce Coupe from November 2011.

My Jaguar A3 board will be here Wednesday 2/29/2012 according to FedEx :-)
Attachments
Deuce Coupe 11/2011
Deuce Coupe 11/2011
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

Re: 3.1L v6 Deuce Coupe

Post by DeuceEFI »

This is FreeEMS engine #11 :-)
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

Re: 3.1L v6 Deuce Coupe

Post by DeuceEFI »

Pictures of the exhaust

Image

Image

Image

Image
User avatar
DeuceEFI
LQFP144 - On Top Of The Game
Posts: 571
Joined: Thu Feb 25, 2010 3:57 am
Location: Gosport, IN USA
Contact:

Re: 3.1L v6 Deuce Coupe

Post by DeuceEFI »

New addition to the interior of the Deuce yesterday:

Image

Image

Air Conditioner/Defroster/Heater inside unit installed.
:-)
User avatar
masterkorp
LQFP112 - Up with the play
Posts: 171
Joined: Tue Jan 17, 2012 11:21 am
Location: Ponte de Lima, Portugal

Re: 3.1L v6 Deuce Coupe

Post by masterkorp »

That is one tight unit!

Vintage Air?

I've always wanted to add a proper aircon to my kadett
Post Reply